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Thread: Hybrid architecture Zarafa and Outlook 365 (Exchange Online)

  1. #1
    Junior Member
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    Question Hybrid architecture Zarafa and Outlook 365 (Exchange Online)

    Hello,

    the requirement is to have an hybrid architecture Zarafa in coexistence with Outlook 365 (Exchange Online) for some weeks (migration).
    One part of the Users (e.g. ) has his mailbox in Zarafa, the other part (e.g. ) is an Outlook 365 user. The domain is identical in each case.
    Mail should be possible for all companyXY user among each other. That means, if a Zarafa user addresses a Outlook 365 user, then Zarafa should not reply "User unknown" but send this mail to Outlook 365 if the user exists in the ldap directory.
    The way Outlook 365 user sends to Zarafa-User is solved.
    The way Zarafa-User to Outlook 365 user is required.

    The configuration is:
    Zarafa 7.1.14-51822 with postfix 2.7.1-1 and LDAP.

    Is this hybrid architecture possible to realize?
    Can someone say what is to do on Zarafa side (my understanding is, that the postfix has to be reconfigured and an additional ldap user attribute has to be set. But I've found nothing in documentation - respectively I've found it but don't recognize ;-)?

    Thanks a lot and kind regards
    ingra

  2. #2
    Zarafa

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    This is essentially a topic of your MTA and works regardless of Zarafa/Kopano. The functionality you need is called "transport maps" in Postfix and can either be queried from LDAP or from a simple text file (as its just temporary I would go for the text file in your case).

    On configuration example I could find in english is this one:

    Every entry that you don't specify will use the default transport, and every email address or email domain you specify will use whatever transport you give for it (be it lmtp or an external smtp).
    Regards Felix

    How to get Kopano

    Zarafa ALPHA/BETA/RC feedback in BETA forum please.
    Zarafa IRC chat: irc.freenode.com > #zarafa
    Zarafa documentation: http://documentation.zarafa.com/

    No support via PM! Please contact our sales team for an offer if you want my full attention.

  3. #3
    Junior Member
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    Hello Felix,

    Thanks a lot for the quick answer and in particular the link, that would help a lot.
    Sending all generated mails to the other smtp-server is an interesting way. Does this mean, that also a Zarafa-User to Zarafa-User Mail is going first to Exchange online an then returning back to Zarafa or would this mail directly delivered?

    Best regards
    ingra
    Last edited by ingra; 17-10-2016 at 09:16 AM.

  4. #4
    Zarafa

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    Hello ingra,

    that is at least not how you normally use transport maps (but is theoretically possible as far as I can see).

    The standard use case is that you create a mapping like the following:

    my-domain -> delivers locally, e.g. over lmtp
    [email protected] -> delivers to external smtp
    Regards Felix

    How to get Kopano

    Zarafa ALPHA/BETA/RC feedback in BETA forum please.
    Zarafa IRC chat: irc.freenode.com > #zarafa
    Zarafa documentation: http://documentation.zarafa.com/

    No support via PM! Please contact our sales team for an offer if you want my full attention.

  5. #5
    Junior Member
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    Hello Felix,

    I will do so and try it. Thanks a lot for this advice.

    Best regards
    ingra

  6. #6
    Junior Member
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    Hello Felix,

    fyi:

    This will work (again thanks for your support, it leads to the right way):
    Approach:
    Login as "root" or sudo-account at Zarafa-Server.

    1. edit /etc/postfix/transport
    for every migrated user add an entry like
    smtp:my_maildomain-de.mail.protection.outlook.com

    2. execute “sudo postmap /etc/postfix/transport”.
    An additional command “sudo postfix reload” was not necessary here when tested, maybe it is necessary on other Linux distributions / postfix versions.

    Works fine also in a multiple-maildomain-installation with different outlook365-domains.

    Best Regards
    ingra

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